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Detail specifications 67B1 - Level 1 ★
The lebensohl convention
Le Lebensohl convention is used by the responder, after his partner opened 1 NT and an overcall by the opps. we describe here a simple version of the convention which is not used in Ibridge exercises.
There are two configurations
There are two configurations
- If you have enough strength to bid game and a stopper in the opps suit : your response is a cue bid (Stayman), 3 SA (without a card Major ), or bidding a suit at the 3 level (with a card Major or a ) card minor
- Without a stopper in the opps' suit bid 2 NT forcing bid transfer for ♣, or a suit at the level (natural bid, weak)
- Finally, a double is punitive/li>
| S | W | N | E |
|---|---|---|---|
1NT |
2 |
||
2NT |
K
J
8
10
9
5
A
6
5
J
10
9
8
| S | W | N | E |
|---|---|---|---|
1NT |
2 |
||
3NT |
K
J
8
A
J
9
5
10
6
5
J
10
9
Problème E5618
3 SA that shows the ♥ stopper and enough strength to play game (and debies 4 cartes in ♠).
3 SA that shows the ♥ stopper and enough strength to play game (and debies 4 cartes in ♠).
The 2 NT bid
It shows:
It shows:
- An ambiguous strength , Game is possible, but not certain.
- and, a lack of stopper in the suit of the overcall
- Pass with 6 cards in ♣
- bid 3 ♦ with 6 cartes in ♦
- Cue bid = Stayman
- bid 3 ♥ ou 3 ♠ : naturel avec 5 cartes
- bid 3 NT, natural ...without a stopper in the suit of the overcall.
| S | W | N | E |
|---|---|---|---|
1NT |
2 |
||
2NT |
Pass |
3 |
Pass |
3 |
A
J
8
3
10
9
5
A
6
5
J
10
9
Problème E5622
3 ♥ Stayman for ♠
3 ♥ Stayman for ♠
| S | W | N | E |
|---|---|---|---|
1NT |
2 |
||
2NT |
Pass |
3 |
Pass |
Pass |
K
J
3
10
9
K
J
8
6
5
3
J
10
Problème E5623
PASSGame is unlikely...
PASSGame is unlikely...
With a stopper in the opps's suit and strength to bid game
as if the opps had remained silent you will investigate what the best game is
as if the opps had remained silent you will investigate what the best game is
- The cue bid is a Stayman
- 3 SA to play them
- 3 level bids are natural and forcing : they show 5 cards in the Major or 6 cards in the minors
| S | W | N | E |
|---|---|---|---|
1NT |
2 |
||
3 |
K
J
10
9
8
K
J
9
10
6
J
10
9
Problème E5619
3 ♠ Forcing, the opener will conclude at game: 3 NT with the ♠ fit, or 4 ♠ with the fit.
3 ♠ Forcing, the opener will conclude at game: 3 NT with the ♠ fit, or 4 ♠ with the fit.
Xith a weak hand
With no possibility of a competitive bid...you must pass !
Otherwise : you can bid at the 2 level with a 5 card suit.CIt is purely a competitive bid and the opener will pass (in general..).
With no possibility of a competitive bid...you must pass !
Otherwise : you can bid at the 2 level with a 5 card suit.CIt is purely a competitive bid and the opener will pass (in general..).
| S | W | N | E |
|---|---|---|---|
1NT |
2 |
||
2 |
Q
J
10
9
8
J
9
10
6
5
J
10
9
Problème E5620
2 ♠ Non forcing bid that shows a weak hand and 5 cards in ♠ with no ♥ stopper
2 ♠ Non forcing bid that shows a weak hand and 5 cards in ♠ with no ♥ stopper
FR version
2 NT that shows the lack of a stopper in ♥